std::copy_if<>

struct MatchPerson : public std::binary_function <Person*, std::string, bool>
{
    bool operator()(const Person* a, const std::string& b) const
    {
        return (a->geburtsOrt == b) ;
    }
};

main()
{
    Domain domain();
    std::vector<Person*> personen; 
    domain.loadpersonen(personen);
    std::vector<Person*> muenchner_kunden;
    std::copy_if(
        personen.begin(),
        personen.end(),
        muenchner_kunden.begin(),
        std::bind2nd(MatchPerson(), "Muenchen"));
}